[@WindsOfFate]

I can't speak for the players, but as a GM I knew I was going to have to address this issue eventually.  We are only on our second monster so I was still feeling things out but knew I would have to do something eventually.  The power set and level of Yuri was proving to be a little problematic for the monsters to effectively counter without me just going completely crazy with their powers.  In general it should be the players figuring out strategies to counter the monster and not the other way around.

Yuri can still work but you just need to keep some of his 'original' power in check for the role play to proceed smoothly.  My worst fear was that I might have to go overboard with a monster to counter Yuri's magic but have to make them too powerful in the process for other characters to feel like they could really contribute.